HIGH CAPACITY PUMP MODEL HCP5 The High Capacity Pump Model HCP5 is a well established high capacity pump for the higher, sonic flow rate testing requirements of Dry Powder Inhalers (DPIs), although it can equally well be used for MDIs, Nasal Sprays and Nebulisers. Like the LCP5, an on/off switch and flow control valve are located on the front panel of the unit. Two sets of vacuum inlets on either side of the pump allow the user to choose the location of the pump in relation to the test apparatus. Each set of vacuum inlets consists of a regulated and unregulated inlet. The regulated inlet is connected to the pump via the flow control valve and is used to regulate flow between 0 and 250 L/min for MDI, nasal spray and nebuliser applications. The unregulated inlet bypasses the flow control valve and is used in conjunction with the Critical Flow Controller for dry powder applications. It provides a maximum flow of 416 L/min. In instances where this flow rate is still not adequate, it is possible to connect a Secondary HCP5 in parallel to the primary pump to give a maximum unregulated flow rate of 833 L/min. This is typically required when testing DPIs under sonic flow conditions with the NGI, at high flow rates. Special hose fittings are supplied with the secondary pump to connect it to the primary unit. The pump measures 320 x 560 x 390 mm (w x d x h) and weighs 45 kg.